TM 5-2420-230-24-1
Spicer Speciality Axle Division - Technical Publications
SECTION 12
SETTING HUB BEARINGS
12.1
Rotate hub, and using a rawhide mallet, knock hub backwards and forwards along axle arm to shock
load and thus settle bearings into position.
Note :- It is important to rotate and shock load hub because :-
a)
Rotation serves to ensure that bearings settle in their correct tracks.
b)
'Shock load' serves to ensure that bearings are seated correctly up to their
shoulder abutments.
12.2
Check tightness of axle tube nut (16) and, if loose, retighten hard. Rotate and shock load hub again.
12.3
Continue this procedure until axle tube nut (16) cannot be tightened further after rotating and shock
loading hub.
Back off axle tube nut (16) by approx 1/16 " (200) of a turn, then rotate and knock hub outwards along
12.4
axle arm to release bearings.
12.5
Tighten axle tube pinch bolt nut (75) to 30 - 34 lbs ft. (41 - 46Nm.).
12.6
Mount a magnetic dial indicator on hub and position pointer on end of axle arm or on annulus gear
end (17) - See fig. no. 9.
12.7
Oscillate hub backwards and forwards along axle arm and note variation shown by dial indicator.
12.8
The permissable variation is between 0.0005" to 0.002 " (0.013 to 0.51 mm) movement (end float).
12.9
If end float is outside specified limits, back off pinch bolt nut (75) and reset axle tube nut (16), using the
above procedure, until correct setting is obtained.
TP62
Annulus gear
Hub
Dial indicator
Fig.No.9.
SECTION 13
INITIAL PREPARATION TO BUILD PLANET CARRIER UNIT
13.1
Place planet carrier (79) outer face down on bench.
13.2
Fit sun gear thrust button (77) into centre location in bore of planet carrier (79), chamfered face down.
13.3
Smear planet pin 'O' rings (5) with clean hub bearing grease then fit onto planet pin collars (4).
Page No.D13
Manual No. 1785 Issue A
Spicer Speciality Axle Division
J-105
